Atropine Induced Paradoxical Atrioventricular Conduction Block in a Jindo Dog

초록

laboratory tests performed prior to surgery found no significant abnormalities, which might increase risks associatedwith general anesthesia. The dog was premedicated with atropine, induced general anesthesia with thiopental sodiumand maintained with isoflurane. Forty minutes after surgery, the dog was suddenly bradycardic. Atropine (18 ug/kg)was slowly infused intravenously to normalize heart rate. However, paradoxically the dog showed slower heart ratewith intermittent atrioventricular block (2nd degree type I) after atropine infusion. The dogs rhythm was returned toa rare case of paradoxical atrioventricular block inducedby high dose of atropine in a dog.

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